WO2013036403A1 - TREATMENT OF DISEASES RELATED TO ALPHA SUBUNITS OF SODIUM CHANNELS, VOLTAGE-GATED (SCNxA) WITH SMALL MOLECULES - Google Patents

TREATMENT OF DISEASES RELATED TO ALPHA SUBUNITS OF SODIUM CHANNELS, VOLTAGE-GATED (SCNxA) WITH SMALL MOLECULES Download PDF

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Publication number
WO2013036403A1
WO2013036403A1 PCT/US2012/052685 US2012052685W WO2013036403A1 WO 2013036403 A1 WO2013036403 A1 WO 2013036403A1 US 2012052685 W US2012052685 W US 2012052685W WO 2013036403 A1 WO2013036403 A1 WO 2013036403A1
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WIPO (PCT)
Prior art keywords
disease
expression
cells
gated
voltage
Prior art date
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PCT/US2012/052685
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English (en)
French (fr)
Inventor
Joseph Collard
Olga Khorkova Sherman
Jane H. Hsiao
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Curna, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47832504&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2013036403(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Curna, Inc. filed Critical Curna, Inc.
Priority to EA201490420A priority Critical patent/EA029151B1/ru
Priority to BR112014005234A priority patent/BR112014005234A2/pt
Priority to CN201280049885.3A priority patent/CN103874486A/zh
Priority to KR1020147008477A priority patent/KR101991980B1/ko
Priority to JP2014528523A priority patent/JP6125505B2/ja
Priority to CA2847811A priority patent/CA2847811C/en
Priority to EP12829528.4A priority patent/EP2753317B1/en
Priority to MX2014002668A priority patent/MX365525B/es
Priority to US14/343,890 priority patent/US10583128B2/en
Publication of WO2013036403A1 publication Critical patent/WO2013036403A1/en

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    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/436—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a six-membered ring having oxygen as a ring hetero atom, e.g. rapamycin
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Definitions

  • Embodiments of the invention comprise small molecules that modulate the expression and/or function of alpha subunits of voltage-gated sodium channels and associated molecules.
  • NAT ⁇ nainral antisense transcript
  • Oligonucleotides and/or modified oligonucleotides have been designed to target the NAT and "op-regulate" the expression of the target mRNA and protein. Because of the vast number of disease states and conditions which require or need ne w and/or first line pharmaceutical treatment, there is a significant need for new approaches and drugs to modulate protein expression or underexpression.
  • the prior art in general includes gene therapy, antisense technology, siRNA technology as well as the use of small molecules to regulate protein expression.
  • Most of the antisense technology and the siRNA technology and related patents or patent applications relates to the use of such "drugs" to mitigate (down regulate) the expression of proteins.
  • the therapeutic target is often the mRN A or DN coding for the particular protein or coding for the RNA which is translated into the protein of interest. Examples of various disclosures from the patent literature are provided below.
  • U.S. Pat. No. 6165712 claims molecules which transcriptionally modulate the expression of a gene and increase production of recombinant proteins.
  • This reference discloses the upregulatkm of proteins.
  • the modulating molecule may comprise an antisense nucleic acid.
  • the modulating molecule may bind to a promoter region upstream of the coding sequence encoding an oncogene or tumor suppressor gene,
  • U.S. Pat. No. 6444464 discloses antisense nucleotides targeted to nucleic acids encoding transcription factors E2F.
  • U.S. Pat. No. 6617122 claims polypeptides, nucleic acid molecules expressing such polypeptides, and a method of treating a human having low HDL comprising administering to such human an ABCl polypeptide, or cholesterol regulating fragment thereof
  • the ABC-1 polypeptide is wild type ABC-1 or has a mutation that increases its stability or its biological activity.
  • the patent also discloses candidate compounds that modulate (increase) the level of expression of said protein.
  • Antisense nucleotides to the cDNA of the ABCVi protein were disclosed.
  • the reference discloses that using a compound to inhibit a transcription factor that represses ABC I would be expected to result in lipregulation of ABCl and, therefore, raise HDL levels.
  • the transcription factor is a protein.
  • U.S. Pat. No. 6710.174 discloses antisense inhibition of vascular endothelial growth factor.
  • U.S. Pat. No. 714499 discloses oligonucleotides that target hypoxia-inducible factor 1 alpha (aHiF) expression and methods for treating diseases associated with the expression of such a. protein.
  • This patent discloses the overexp.ress.ion of natural antisense transcript of all I F that is complementary to the 3 * untranslated region of HIF-I alpha and which is associated with a human disease (non- pappilary clear-cell renal carcinoma),
  • U.S. Pat, No. 7148204 discloses antisense modulators of BCL- expression. Modulation induces apoptosis.
  • U.S. Pat. No. 719 107 discloses antisense modulators of Kloesin-hke 1 expression.
  • U.S. Pat. No. 7202357 discloses antisense compounds, compositions and methods are disclosed for modulating the expression of acyl CoA cholesterol acyltransferase-2.
  • the compounds are antisense oligonucleotides targeted to nucleic acids encoding acyl CoA. cholesterol acyltransterase-2.
  • U.S. Pat. No. 7229976 discloses antisense oligomers targeted to a. nucleic acid encoding fbrkhead box 01 A to modulate expression thereof.
  • U.S. Pat. No. 7235534 discloses antisense oligonucleotides that target the genes and raRNAs encoding mammalian estrogen receptors (ER) alpha and or beta and modulate the receptors' responses.
  • the treatment improves plaque stabilization and vascular healing and endothelial recovery after vascular injury.
  • U.S. Pat. No. 7285288 discloses oligonucleotides that hybridize to BcJ ⁇ 2 nucleic acids, the gene products are known to interact with the tomorigenic protein Be 1-2.
  • U.S. Pat No. 7335764 discloses antisense modulators of acyl coA cholesterol acyltransferase-2 expression.
  • the antisense composition comprises a substantially uncharged antisense compound having a nuclease-resistant backbone, capable of uptake by target cancer ceils in the subject, containing between 10-40 nucleotide bases and having a base sequence effective to hybridize to a region of processed or preprocessed human SNAIL RNA transcript having a specific sequence ID NO; 21.
  • U.S. Pat. No. 7420050 discloses antisense molecules which inhibit the expression of TGF-beta. Kidne disease.
  • U.S. Pat. No. 7425545 discloses modulation ofC-reactive Protein expression.
  • U.S. Pat. No. 7456154 discloses antisense oligonucleotides against human acetylcholinesterase and uses thereof.
  • U.S. Pat. No. 7662948 discloses antisense oligonucleotides against VRl (capsaicin receptor) for the treatment of pain.
  • U.S. Pat. No, 7687617 discloses oligonucleotides with alternating segments of locked and non- locked nucleotides.
  • U.S. Pat. No. 7691995 discloses in vivo production of small interfering RNAs.
  • U.S. Pat. No. 7709546 discloses modulation of gene expression by oligomers targeted to chromosomal DNA.
  • U.S. Pat. No. 7709630 discloses antisense modulation of connective tissue growth factor expression.
  • U.S. Pat. No. 7723508 discloses modulation of apolipoprotein (A) expression.
  • U.S. Pat. No. 7732422 discloses T PM-2 antisense therapy for the treatment of cancer.
  • U.S. Pat. No. 7732590 discloses modulation of diacylglycetol acyltransferase 2 expression.
  • US2O03/O1 1075 discloses methods of targeting gene therapy (antisense nucleotides) to specific organs using modified oiigonuc!eotides-!ipopiiiic oligonucleotide conjugates.
  • US2004/0033480 discloses the use of resveratroi (3,5,4'4rihydroxy rans ⁇ stilbene) to upregulate the expression of apolipoprotein A .1.
  • the invention comprises a method of modulating the expression of a gene encoding an alpha subunit of a voltage gated sodium channel (SCNxA) comprising administration, to a patient in need thereof of at least one active ingredient selected from the group consisting of a diuretic, an atypical antipsychotic, a potassium channel opener, a calcium channel blocker, an antifungal, an antioxidant, a FOES inhibitor, an estrogen agonist (steroidal or non-steroidal), an antidepressant, a proton pump inhibitor, a 5HT1D receptor agonist, a hypnotic, an anti-ulcer medication, a 5HT4 agonist, a GAB A agonist, an antihistamine or an anabolic steroid for the treatment of an SCNx A related disorder or disease.
  • SCNxA voltage gated sodium channel
  • this invention comprises a method of modulating the expression of an SCNxA gene comprising administration of at least one small molecule selected from the group consisting of milnaeipran, torsemide, risperidone, pinacidii benidipine, ketoconazole, ebselen, tadalafiL zerano!, nefazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepam, atnlexanox, mosapride, sertraline or stanoz.olol or pharmaceutically acceptable salts, isomers, enantiomers, isoforms, polymorphs, hydrates, solvates or prodrugs thereof [ ⁇ 46
  • the inventio comprises a method of interfering with the function of an SCNxA RNA wherem said interference results in the up-reguiation of the SCNxA gene product, comprising administering a small molecule selected trom the group consisting of miinacipran, torsemide, risperidone, pinacidil, benidipine, ketoconazole, ebselen, tadaSafxi, zeranol, nefazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepam, amlexanox, mosapride, sertraline or stanozolol or pharmaceutically acceptable salts, isomers, enantiomers, isoforms, polymorphs, hydrates, solvates or prodrugs thereof wherein the functions of RNA to be interfered with include at least one
  • One embodiment provides a method of modulating function and or expression of an SCNxA polynucleotide in biological systems comprising contacting said system with a small molecule selec ted from the group consisting of miinacipran, torsemide, risperidone, pinacidil, benidipine, ketoconazole, ebselen, tadalafif zeranol, nefazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepam, amlexanox, mosapri.de, sertraline or stanozolol or pharmaceutically acceptable salts, isomers, enantiomers, isoforms, polymorphs, .hydrates, solvates or prodrugs thereof thereby modulating function and/or expression of the SCNxA polynucleotide in biological systems.
  • One embodiment provides a method of modulating function and/or expression of an SCNxA polynucleotide in patient cells or tissues /// vivo or in viiro comprising contacting said cells or tissues with a small molecule selected from the group consisting of miinacipran, torsemide, risperidone, pinacidil, benidipine, ketoconazole.
  • ebselen tadalafij, zeranol, neiazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepam., amlexanox, mosapride, sertraline or stanozolol or phamiaceuticailv acceptable salts, isomers, enantiomers, isoforms, polymorphs, hydrates, solvates or prodrugs thereof thereby modulating function and or expression of the SCNxA polynucleotide in patient cells or tissues in vivo or in vitro.
  • a small molecule selected from the group consisting of miinacipran, torsemide, risperidone, pinacidil, benidipine, ketoconazole, ebselen, tada!aill, zeranol, nefazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepam, amlexanox, mosapride, sertraline or stanozolol or pharmaceutically acceptable salts, isomers, enantiomers, isoforms, polymorphs, hydrates, solvates orprodrags thereof modifies the expression of SCNxA -polynucleotides, for example, nucleotides set forth in SEQ ID NO: I , and any variants, alleles, homologs, mutants, derivatives, fragments and complementary sequences thereto.
  • Another embodiment provides a method of modulating function and/or expression of an SCMIA polynucleotide in patient cells or tissues /// vivo or in viiro comprising contacting said cells or tissues with a small molecule selected from the group consisting of milnacipran, torsemide, risperidone, pinacidii, be dipine, ketoconazole, ehselen, tadalafil, zeranol, nefazadone, lomerizine, icariin, omeprazole, 1,-694,247, nitrendipine, uimetazepam, amlexanox, mosapride, sertraline or stanozoiol or pharmaceutically acceptable salts , isomers, enantiomers, isoforms, polymorphs, hydrates, solvates or prodrugs thereof thereby modulating function and/or expression of the SCNIA polynucleotide in
  • the invention comprises a pharmaceutical composition
  • a pharmaceutical composition comprising a small molecule selected from the group consisting of milnacipran, torsemide, risperidone, pinacidii benidipine, ketoconazole, ebselen, tadalafil, zeranol, nefazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepa i, amlexanox, mosapride, sertraline or stanozoiol or phannaceutica!ly acceptable salts, isomers, enantiomers, isoforms, polymorphs, hydrates, solvates or prodrugs thereof and a pharmaceutically acceptable excipient wherein said composition modulates the expression of an SCNxA polynucleotide,
  • the small molecules are administered to a patient orally, subeutaneously, intramuscularly, intravenously or intraperitoneally.
  • a treatment regimen comprises administering the small molecules at least, once to patient; however, this treatment can be modified to include multiple doses over a period of time.
  • the treatment can be combined with one or more other types of therapies.
  • the small molecules are encapsulated in a liposome or attached to a carrier molecule (e.g. cholesterol, TAT peptide) or targeted nanopaiticles and/or antibody coated vesicles depending upon the physical and/or chemical properties of the particularly selected small molecule.
  • a carrier molecule e.g. cholesterol, TAT peptide
  • targeted nanopaiticles and/or antibody coated vesicles depending upon the physical and/or chemical properties of the particularly selected small molecule.
  • the present invention comprises modulation of the expression of any one of the isoforms of SCNxA family members and variants thereof comprising administration to a patient in need of treatment thereof a pharmaceutically effective amount of at least one compound recited herein wherein said modulation results in the treatment of a disease associated with at least one of the SCNxA genes or expression products produced therefrom.
  • Figure 1 shows increase in SCNl A mRNA levels in primary skin fibroblasts carrying a Pravet- associated mutation (hatched bars) and adult primary keraiinocytes (empty bats) after treatment with small compounds at a concentraton of I uM.
  • SEQ ID NO: 1 Homo sapiens sodium channel voltage-gated, type i, alpha subunit (SCNl A), transcript variant i. mRNA (NCBI Accession No.: NMJXH 165963).
  • SEQ ID NO: 2 Homo sapiens sodium channel, voltage-gated, type II, alpha subunit (SCN2A), transcript variant I , . mR A (NCBI Accession No. : NM_021007.2).
  • SEQ ID NO: 3 Homo sapiens sodium channel, voltage-gated, type III, alpha subunit (SCN3A), transcript variant 1 , mRNA (NCBI Accession No.: NM _006922.3).
  • SEQ ID NO: 4 Homo sapiens sodium channel, voltage-gated, type IV, alpha subunit (SCN4A), mRNA (NCBI Accession No.: NM J)00334.4).
  • SEQ ID NO: 5 Homo sapiens sodium channel, voltage-gated, type V, alpha subunit (SCN5A), transcript variant 1 , mRNA (NCBI Accession No.: NMJ 98056.2).
  • SEQ ID NO: 6 Homo sapiens sodium channel, voltage-gated, type VII, alpha (SCN7A), mRNA (NCBI Accession No.: N ... 002976.3)
  • SEQ ID NO: 7 Homo sapiens sodium channel, voltage gated, type VOL alpha subunit (SCN8A), transcript, variant 1 , mRNA (NCBI Accession No.: NM 014191.2 ⁇
  • SEQ ID NO: 8 Homo sapiens sodium channel, voltage-gated, type LX, alpha subunit (SCN9A), mRNA (NCBI Accession No.: NM 002977.3)
  • SEQ ID NO: 9 Homo sapiens sodium channel, voltage-gated, type X, alpha subunit (SCNl. OA), mRNA (NCBI Accession No.; NM 006514.2)
  • SEQ ID NO: 1.0 Homo sapiens sodium channel, voltage-gated, type XI. alpha subunit (SCNl I A), mRNA (NCBI Accession No.; NMJ) 14139.2)
  • SCN12A Homo sapiens voltage-gated sodium channel alpha subunit SCN12A (SCN12A) mRNA (NCBI Accession No.: AF109737.1 ).
  • SCN12A voltage-gated sodium channel alpha subunit SCN12A
  • AF109737.1 The sequence listings provided in all cases are actually the cDNA version of the RNS transcript.
  • genes, gene names, and gene products disclosed herein are intended to correspond to homo gs from any species for which the compositions and methods disclosed herein are applicable. Thus, the terms include, but are not limited to genes and gene products from humans and mice. It is understood that when a gene or gene product from a particular species is disclosed, this disclosure is intended to be exemplary only, and is not to be interpreted as a limitation unless the context in which it appears clearly indicates. 11ms, for example, for the genes disclosed herein, which in some embodiments relate to mammalian nucleic acid and amino acid sequences are intended to encompass homologous and/or orthologous genes and gene products from other animals including, but not limited to other mammals, fish, amphibians, reptiles, and birds. In an embodiment, the genes or nucleic acid sequences are hitman.
  • mRNA means the presently known mRNA transcripts) of a targeted gene, and any - urther transcripts which may be elucidated.
  • SC xA sodium channel, voltage-gated, alpha sub-unit
  • SCNxA and “sodium channel, voltage-gated, alpha sub-unit” are inclusive of all family members, mutants, alleles, isoforms, fragments, species, coding and noncoding sequences, sense and antisense polynucleotide strands, etc.
  • the SC xA gene family consists of 1 1 known members (SCN1A, SCN2A, SCN3A, SCN4A, SCN5A, SCN7A (also known as SCN6A), SCN8A, SC 9A, SCN10A, SCNl lA an SC ilA).
  • nucleotide 5 covers naturally occurring nucleotides as well as nonnaturally occurring nucleotides. It should be clear to the person skilled in the art that various nucleotides which previously have been considered “iion-naturally occurring” have subsequently been found in nature. Thus, “nucleotides” includes not only the known purine and pyrimidine heterocyeles ontainrag molecules, but also heterocyclic analogues and iautomers thereof.
  • nucleotides are molecules containing adenine, guanine, thymine, cytosme, uracil, purine, xanthine, diaminopurine, 8-oxo- N6-methyladenine, 7- deazaxan thine, 7-deazaguanine, N4 i N4-ethanocytosin, N6,N6-ethano-2,6- diammopurine, 5-methyicytosine, 5-(C3-C6 ⁇ -alkyny1cytosine, 5-fluorouracil, 5-bromouracil, pseudoisocytosine, 2-hydroxy-5-methyl-4- triazolopyridm, isocytosine, isoguanin, inosine and the "non-naturally occurring" nucleotides described in Benner t /., U.S.
  • nucleotide is intended to cover every and all of these examples as well as analogues and tautomers thereof.
  • Especially interesting nucleotides are those containing adenine, guanine, thymine, cytosine, and uracil, which are considered as the naturally occurring nucleotides in relation to therapeutic and diagnostic application in humans.
  • Nucleotides include the natural 2 -deoxy and 2- hydroxy I sugars, e.g., as described in Komberg and Baker, DNA Replication, 2nd Ed (Freeman, San Francisco, 1 92) as well as their analogs,
  • modulation means either an increase (stimulation) or a decrease (inhibition) in the expression of a gene.
  • modulating expression further means to either enhance or reduce the expression of a given protein by interfering with the expression, or translation of RNA.
  • the drug may block expression of a suppressor gene-e.g,, a tumor suppressor gene or any other gene product or mutated gene that results in down regulation or under expression of a protein product.
  • the drug may directly block expression of a given gene or contribute to the accelerated breakdown of the RNA transcribed from that gene.
  • variants when used in the context of a polynucleotide sequence, may encompass a polynucleotide sequence related to a wild type gene. This definition may also include, for example, "allelic,” “splice,” “species,” or “polymorphic” variants.
  • a splice variant may have significant identity to a reference molecule, but will generally have a greater or lesser number of polynucleotides due to alternate splicing of exons during .mRNA processing.
  • the corresponding polypeptide may possess additional functional domains or an absence of domains.
  • Species variants are polynucleotide sequences that vary from one species to another. Of particular utility in the invention are variants of wild type gene products.
  • Variants may result, from at least one mutation in the nucleic acid sequence and may result in altered mRNAs or in polypeptides whose structure or function may or may not be altered. Any given .natural or recombinant gene may have none, one, or many allelic forms. Common mutational changes that give rise to variants are generally ascribed to natural deletions, additions, or substitutions of nucleotides. Each of these types of changes may occur alone, or in combination with the others, one or more times in a given sequence.
  • polymorphic variant is a variation in the polynucleotide sequence of a particular gene between individuals of a given species. Polymorphic variants also may encompass "single nucleotide polymorphisms" (SNPs,) or single base mutations in which the polynucleotide sequence varies by one base. The presence of SNPs may be indicative of for example, a certain population with a propensity for a disease state, that is susceptibility versus resistance.
  • SNPs single nucleotide polymorphisms
  • a “derivative" polypeptide or peptide is one that is modified, for example, by glyeosylatson, pegytation, phosphorylation, sultation, reduciion/alkylation, acylailon, chemical coupling, or mild formalin treatment
  • a derivative may also be modified to contain a detectable label, either directly or indirectly, including, but not limited to. a radioisotope, fluorescent, and enzyme label.
  • the term "animal” or “patient” is meant to include, for example, humans, sheep, elks, deer, mule deer, minks, mammals, monkeys, horses, cattle, pigs, goats, dogs, cats, rats, mice, birds, chicken, reptiles, fish, insects and arachnids.
  • 888 1 covers the treatment of a disease-state in a mammal, and includes: (a) preventing the disease-state from occurring in a mammal, in particular, when such mammal is predisposed to the disease-state but has not yet been diagnosed as having it; (b) inhibiting the disease-state, e.g., arresting it development: and/or (c) relieving the disease-state, e.g., causing regression of the disease state until a desired endpomt is reached.
  • Treating also includes the amelioration of a symptom of a disease (e.g., lessen the pain or discomfort), wherein such amelioration may or may not be directly affecting the disease (e.g., cause, transmission, expression, etc.).
  • Neurological, disease or disorder refers to any disease or disorder of the nervous system and/or visual system.
  • Neurological disease or disorder include disease or disorders that involve the central nervous system (brain, brainstem and cerebellum), the peripliera! nervous system (including craniai nerves), and the autonomic nervous system (parts of which are located in both central and peripheral nervous system).
  • neurological disorders include but are not limited to, headache, stupor and coma, dementia, seizure, sleep disorders, trauma, infections, neoplasms, neuroopthalraology, movement disorders, demyeiinating diseases, spinal cord disorders, and disorders of peripheral nerves, muscle and neuromuscular junctions.
  • Addiction and mental illness include, but are not limited to, bipolar disorder and schizophrenia, are also included in the definition of neurological disorder. The following is a list of several neurological.
  • compositions and methods according to the present invention acquired epileptiform aphasia; acute disseminated encephalomyelitis; adrenoleukodystrophy; age-related macular degeneration; agenesis of the corpus callosum; agnosia; Aicardi syndrome; Alexander disease; Aipers * disease; alternating hemiplegia;
  • Vascular dementia amyotrophic lateral sclerosis; anencephaly; Angelnmu syndrome; angiomatosis; anoxia; aphasia; apraxia; arachnoid cysts; arachnoiditis; Anronl-Chiari malformation; arteriovenous malformation;
  • Asperger syndrome ataxia telegiectasia; attention deficit hyperactivity disorder; autism; autonomic dysfunction; hack pain; Batten disease; Behcet's disease; Bell's palsy; benign essential blepharospasm; benign focal; amyotrophy; benign intracranial .hypertension; Binswanger's disease; blepharospasm; Bloch
  • Sulzberger syndrome brachial plexus injury; brain abscess; brain injury; brain tumors (including glioblastoma .multiforme); spinal tumor; Brown-Sequard syndrome; Canavan disease; carpal tunnel syndrome; causalgia; central pain syndrome; central pontine myelinolysis; cephalic disorder; cerebral aneurysm; cerebral arteriosclerosis; cerebral atrophy; cerebral gigantism; cerebral palsy; Charcot- Marie-
  • Tooth disease chemotherapy-induced neuropathy and neuropathic pain; Chiari malformation; chorea; chronic inflammatory demyeiinating polyneuropathiy; chronic pain; chronic regional pain syndrome; Coffin
  • Lowry syndrome including persistent, vegetative state; congenital facial diplegia; corticobasal degeneration; cranial arteritis; craniosynostosis; Creufzfeldt-Jakob disease; cumulative trauma disorders;
  • Ciishmg's syndrome cytomegalic inclusion body disease; cytomegalovirus infection; dancing eyes-dancing feet syndrome; DandyWalker syndrome; Dawson disease; De Morsier's syndrome; Dejerine-Klumke palsy; dementia; dermatomyositis; diabetic neuropathy: diffuse sclerosis; Dravetts, dysautonomia; dysgraphia; dyslexia; dystonias; early infantile epileptic encephalopathy; empty sella syndrome; encephalitis; encephaloceles; encephalotrigeminal angiomatosis; epilepsy; Erb's palsy; essential tremor; Fabry's disease;
  • a cardiovascular disease or disorder includes those disorders that, can either cause ischemia or are caused by reperfusion of the heart. Examples include, but are not limited to, atherosclerosis, coronary artery disease, granulomatous myocarditis, chronic myocarditis (non ⁇ granidomatous), primary hypertrophic cardiomyopathy, peripheral artery disease (PAD), peripheral vascular disease, venous thromboembolism, pulmonary embolism, stroke, angina pectoris, myocardial infarction, cardiovascular tissue damage caused by cardiac arrest, cardiovascular tissue damage caused by cardiac bypass, cardiogenic shock, and related conditions that would be known by those of ordinary skill in the art or which involve dysfunction of or tissue damage to the heart or vasculature, especially, but not limited to, tissue damage related to SCN1A activation.
  • CVS diseases include, but are not limited to, atherosclerosis, granulomatous myocarditis, myocardial infarction, myocardial fibrosis secondary to valvular heart disease, myocardial fibrosis without infarction, primary hypertrophic cardiomyopathy, and chronic myocarditis (non-granuiomatous).
  • Examples of diseases or disorders associated with sodium channel dysfonction include, but are not restricted to, malignant hyperthermia, myasthenia, episodic ataxia, neuropathic and inflammatory pain, Alzheimer's disease. Parkinson's disease, schizophrenia, hyperekplexia. SMEI, FEB 3, familial hemiplegic migraine type 3, myotonias such as hypo- and hyperkalaemic periodic paralysis, paramyotonia congenita and potassium aggravated myotonia as well as cardiac arrhythmias such as long QT syndrome,
  • the targets for modulation comprise nucleic acid sequences of sodium channel, voltage-gated, alpha subunit family members (SCNxA), including without limitation sense and/or antisense noncoding and/or coding as well as protein sequences associated with SCNxA transcription and/or translation and/or modulation.
  • SCNxA voltage-gated, alpha subunit family members
  • the preferred target is the SCNIA channel
  • Voltage-sensitive ion channels are a class of transmembrane proteins that provide a basis for cellular excitability and the ability to transmit information via ion-generated membrane potentials.
  • the voltage-gated sodium channels are responsible for the generation and propagation of action potentials in most electrically excitable cells, including neurons, heart cells, and muscle. Electrical activity is triggered by depolarization of the membrane, which opens transmembrane channels that are highly selective for sodium ions, ions are then driven intracellularly through open channels by an electrochemical gradient.
  • sodium-based action potentials in different tissues are similar, electrophysiological stodies have demonstrated that mtiltiple structurally and functionally distinct sodium channels exist, and numerous genes encoding sodium channels have been cloned.
  • the SCN I A gene belongs to a gene family of voltage-gated sodium channels (SCNxA family).
  • Voltage-gated sodium channels play an important role in the generation of action potential in nerve cells and muscle.
  • the alpha subunits (SCNxA) are the main components of the channels, and would be sufficient to generate an ionic current when expressed in cells in vitro.
  • the voltage gated sodium channels include two additional regulatory beta subunits. The role of these subunits would he to modify the sodium channel localisation and density as well as kinetic properties, mainly by affecting the inactivation of the sodium currents.
  • Mutations in the SCN IB gene are associated with GEFS+, Brugada syndrome and cardiac conduction, defects, nonspecific. Mutations in SCN3B is also associated with. Brugada syndrome, mutations in SCN4B cause long QT syndrome- 10.
  • the small molecules are selected from the group consisting of milnacipran, torseinide, risperidone, pinacidil, benidipine ketoeonazoie, ebselen, tadalafll, zeranol, nefazadone, lomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimetazepam, amlexanox, mosapride, sertraline or stanozolol or pharmaceutically acceptable salts, isomers, enantiomers, isofomis, polymorphs, hydrates, solvates or prodrugs thereof are used to prevent or treat diseases or disorders associated with SCNxA family members.
  • Exemplary sodium channel, voltage-gated, type ⁇ , alpha subunit (SCNIA) mediated diseases and disorders which can be treated with the drugs and/or with cell/tissues regenerated from stem cells obtained using the compounds comprise: a neurological disease or disorder, convulsion, pain (including chronic pain), impaired electrical excitability involving sodium channel dysfunction, a disease or disorder associated with sodium channel dysfunction, a disease or disorder associated with misregulation of voltage-gated sodium channel alpha subunit activity (e.g., paralysis, hyperkalemic periodic paralysis, paramyotonia congenita, potassium-aggravated myotonia, long Q-T syndrome 3, motor endpiate disease, ataxia etc.), a gastrointestinal tract disease due to dysfunction of the enteric nervous system (e.g., colitis, ileitis, inflammatory bowel syndrome etc.), a cardiovascular disease or disorder (e.g., hypertension, congestive heart failure etc); a disease or disorder of the genitourinary tract involving sympathetic and parasympathetic innerv
  • the small molecules upregulate polynucleotides of SCNl A.
  • the SCNl A targets comprise variants of SCN l A; mutants of SCNl A, including SNPs; noncoding sequences of SCNl A; alleles, isoforms, fragments and the like.
  • the small molecule is selected from the group consisting of milnacipran, torasemide, risperidone, pinacidil, benidipine, ketocon&zole, ebselen, tadalafil, zeranol, nefazadone, iomerizine, icariin, omeprazole, L-694,247, nitrendipine, nimet&zepam, amiexanox, mosapride, sertraline or stanozolol or pharmaceutically acceptable salts, isomers, enamiomers, isoforms, polymorphs, hydrates, solvates or prodrugs thereof.
  • a target nucleic acid molecule is not limited to SCNl A polynucleotides alone but extends to any of the isoforms, receptors, horaologs, non-coding regions and the like of SCNl A-e.g., the SCNxA family.
  • a small molecule modulates SCNl A targets, including, without limitation, variants, alleles, homologs, mutants, derivatives, fragments and complementary sequences thereto.
  • the small molecules modulate the expression of sodium channel, voltage-gated, type I, alpha subunit (SCNl A) and modulate the expression and/or function of sodium channel, voltage- gated, type 1, alpha subunit (SCNl A) fSEQ ID NO: 1).
  • RNA transcripts can be produced from the same genomic region of DNA, These alternative transcripts are generally known as "splice variants". More specifically, “pre-mRNA variants” are transcripts produced from genomic DNA that contain both moronic and exonic sequences,
  • pre-mRNA variants Upon excision of one or more ex on or intron regions, or portions thereof dining splicing, pre-mRNA variants produce smaller "raRNA variants". These mRNA variants are also known as “alternative splice variants”. If no splicing of the pre ⁇ mRNA variant occurs then the pre-mRNA variant is identical to the mRNA variant
  • Variants can be produced through the use of aitemative signals to start or stop transcription.
  • Pre- mRNAs and roRNAs can possess more than one start codon or stop codon.
  • Variants that originate from a pre-jnRNA or mRNA that use alternative start codons are known as "alternative start variants" of that pre- mRNA or mRNA.
  • Those transcripts that use an alternative stop codon are known as “aitemative stop variants" of that pre-mRNA or mRNA.
  • One specific type of alternative stop variant is the "poly A variant" in whic the multiple transcripts produced result from the alternative selection of one of the "polyA stop signals" by the transcription machinery, thereby producing transcripts that terminate at unique polyA sites.
  • the types of variants described herein are also embodiments of target nucleic acids.
  • the "preferred target segments” identified herein may be employed in a screen for additional compounds that modulate the expression of sodium channel, voltage-gated, type L alpha subunit (SC 1A) polynucleotides.
  • Modules are those compounds that decrease or increase the expression of a nucleic acid molecule encoding sodium channel, voltage-gated, type I. alpha subunit (SCN S.A) or its corresponding protein.
  • Hie screening method comprises the steps of contacting a preferred target segment of a nucleic acid molecule encoding sense or natural antisense polynucleotides of Sodium channel, voltage-gated, type 1, alpha subunit (SCN I A) or its corresponding protein with one or more candidate modulators, and selecting for one or more candidate modulators which decrease or mcrease the expression of a nucleic acid molec ule encoding Sodium channel, voltage -gated, type 1, alpha subunit (SCNi A) polynucleotides or its corresponding protein.
  • the candidate modulator or modulators are capable of modulating (e.g.
  • the modulator may then be employed in further investigative studies of die function of sodium channel, voltage-gated, alpha subunit (SCNxA) polynucleotides, or for use as a research, diagnostic, or therapeutic agent in accordance with the present invention.
  • the small molecules used in accordance with this invention may be conveniently and routinely made through well known synthetic methods. Any other means for such synthesis may also be employed; the actual synthesis of the small molecules is well within the talents of one of ordinary skill in the art or such molecules may be obtained from a commercial vendor or supplier.
  • Each of the preferred molecules used in the methods of the invention are known pharmaceutical drug products and can be purchased or obtained from active pharmaceutical ingredient manufacturers, in addition, such drugs have published synthetic methods and one of ordinary skill in the art of synthetic chemistry may synthesize such drugs via known routes or one of ordinary skill in the art may design new synthetic methods. These drugs and physical and salt forms thereof may be modified by standard chemical means to make pro-drugs.
  • Such pro-drugs include esters and/or other chemical derivatives and/or modifications wherein, upon administration, the pro-drug cleaves into the known active pharmaceutical ingredient in the dosage form (drug product).
  • These drugs hi term, may be metabolized into known active metabolites and such metabolites are included within the scope of the invention.
  • the invention further includes enantiomers and/or diastereomers of the drug products, various salt forms including sodium and potassium salts as well, as hydrates and solvates of such products.
  • the invention further includes the use of amorphous forms of each of the drug products or salts thereof in any suitable dosage form.
  • the present invention further includes acid salts of such products wherein tire counierion is selected from a halide salt such as chloride or bromide and the like.
  • a halide salt such as chloride or bromide and the like.
  • ecrystal ligation methods and other known purification methods may be utilized to prepare crystal forms of such active pharmaceutical ingredients.
  • RNA or protein up-regulation or down regulation can be assessed by several methods well known in the art. For example, SCN1.A fibroblasts and/or keratinocytes or other cell types as desired are selected and grown for the specific assays herein. One day before the experiment cells are plated at the density of appro imately 4xl0 4 /well into 24 well plates in Growth Media and incubated at 37°C and 5% CO2 overnight. Next day, the media in the 24 well plates is changed to fresh Growth Media (1 ml/well) and the cells are dosed with small compounds. Compound stocks are prepared in DMSO at a concentration of 1 mM.
  • I mM stock solutions are diluted to the concentration of I uM in Growth Media.
  • One in 1000 dilution of DMSO is used for the control wells.
  • RNA is extracted from the cells using SV Total RNA Isolation System from Promega (cat # Z3105) following the manufacturers' instructions.
  • Six hundred nanograms of purified total RNA is added to the reverse transcription reaction performed using Superscript VILO cDNA Synthesis Kit from Invitrogen (cat#l 1 754-250) as described in the manufacturer's protocol.
  • the cD ' NA from this reverse transcription reaction is used to monitor gene expression by real time PCR using AB.1 Taqman Gene Expression Mix (cat#4369510) and primers/probes designed by ABI (assays Hs003?4696_ml , Hs00897350_ml or Hs00897341_ ml for human SCNIA).
  • the following PGR cycle is used: 50 i C for 2 rain, 95°C for 10 min, 40 cycles of (95°C for 15 seconds, 60 d C for 1 min) using StepOne Plus Real Time PCR system (Applied Biosystems).
  • the assay for 1 SS is manufactured by ⁇ (cat# 4319413E). Fold change in gene expression after treatment with compounds is calculated based on the difference in 18S-norma!ized dCt; values between compound- and vehicle-treated samples.
  • RNA after addition of the small molecule can also be detected by measuring an enzymatic activity or a reporter protein activity.
  • a coding region f om a gene can be used to build a model control gene, by inserting a reporter coding region between the gene and its poly(A ) signal into a piasmid so that the gene and the reporter will always he expressed at the same Level The effectiveness of individual small molecules would be assayed by observing the modulation of the reporter gene.
  • Reporter genes useful in the methods of the present invention include acetohydroxyacid synthase (AHAS), alkaline phosphatase (AP), beta gaiaetosidase (LacZ), beta glucuronidase (GUS), chloramphenicol acetyltransferase (CAT), green fluorescent protein (GFP), red fluorescent protein (RFP), yellow fluorescent protein (YFP), cyan fluorescent protein (CFP), horseradish peroxidase (HRP), iuciferase (Luc), nopaline synthase (NOS), oetopine synthase (OCS), and derivatives thereof.
  • AHAS acetohydroxyacid synthase
  • AP alkaline phosphatase
  • LacZ beta gaiaetosidase
  • GUS beta glucuronidase
  • CAT chloramphenicol acetyltransferase
  • GFP green fluorescent protein
  • RFP red fluorescent protein
  • YFP yellow fluorescent
  • iluororoetrie methods e.g. fluorescence spectroscopy, Fluorescence Activated Cell Sorting (FACS), fluorescence microscopy
  • antibiotic resistance determination e.g. fluorescence spectroscopy, Fluorescence Activated Cell Sorting (FACS), fluorescence microscopy
  • SCNxA protein and mRMA expression can be assayed using methods known to those of skill in the art and described elsewhere herein. For example, assays such as tmmunohistochernistry can be used to estimate protein levels. To achieve this, the cells will be grown in 24- well plates using appropriate growth conditions. Forty eight hours after addition of small compounds, the media will be removed and the cells will be washed 3 times with Dulbecco's phosphate-buffered saline without calcium and magnesium (PBS)
  • PBS Dulbecco's phosphate-buffered saline without calcium and magnesium
  • the cells will be washed three times for 5 min with PBS, then incubated with 300 ⁇ of bovine serum albumin (BSA) (Sigma cai# A- 647) at 0.1% in PBS for 30 min at 2 PC.
  • BSA bovine serum albumin
  • the cells will be washed three times for 5 rain with PBS then incubated with 300 ⁇ of avidin solution (Vector Laboratories cat# SP-200T) for 30 min at 2 PC.
  • the cells will be briefly rinsed three times with PBS then incubated with biothi solution (Vector Laboratories cat# SP-200J) for 30 mm at 21°C.
  • the cells will be washed three times with PBS and then incubated overnight at.
  • Vectastain Elite ABC reagent A+B solution Vector Laboratories cat# P -ol Oi
  • the Vectastain Elite ABC- reagent ⁇ ' ⁇ ' ⁇ solution will be prepared at 2l°C 30 min before incubatio with the cells by adding and mixing successively 2 drops of reagent A to 5 mi of PBS and then 2 drops of reagent B .
  • the cells will be washed 3 times for 5 min each with PBS at 2i °C and then incubated with Diaminobenzidine (DAB) peroxidase substrate solution (Vector Laboratories cat# SK-4.105) until cells are stained; the DAB peroxidase substrate solution will be reconststiited before being added to the ceils by mixing 1 ml of ImmPACTTMDAB Diluent with 30 ⁇ of mmPACTTM DAB Chromogen concentrate.
  • DAB Diaminobenzidine
  • the cells will be briefly washed three times with PBS and 300 ⁇ of PBS will be left in each well
  • the staining of the cells will be analyzed directly inside the wells of the 24-weli plate using an inverted Nikon Eclipse TSI00 microscope equipped with a Nikon DS-R.il camera coupled with Nikon Digital-Sight equipment on the screen of a Deli Latitude D630 laptop. Photos of individual wells will be made using the software provided with the Nikon camera, the IS-Elements D 3.0.
  • SCNIA protein can be quantified by enzyme-linked immunosorbent assay
  • the cells will be incubated with 3% hydrogen peroxide (Fisher Chemical cat#H325-100) for 5 min at 2J°C
  • the cells will be washed three times for 5 min with PBS, then incubated with 100 ⁇ of bovine serum albumin (BSA) (Sigma cat# A-9647) at 0,1% in PBS for 30 min at 2 PC.
  • BSA bovine serum albumin
  • the cells will be washed three times for 5 min with PBS then incubated with 300 ⁇ of avidin solution (Vector Laboratories cat# SP-2001) for 30 min at 2 C.
  • the cells will be briefly rinsed three times with PBS then incubated with biotm solution (Vector Laboratories cat SP-2001) for 30 min at 21°C.
  • the cells will be washed three times with PBS and then incubated overnight at 4°C with 100 ⁇ per well of rabbit antibody raised against a synthetic peptide (EEQKKY YNAM KLGSK P) corresponding to C terminal amino acids J 4 1-1508 of rat Sen! a (Abeam eat# ab24820; known to recognize at least rat Seal a, human SCN 1 A and also mouse Sen 1 a) diluted at 1 :250 in PBS/BSA 0.1%, After equilibrating the plate for 5 min at 21°C.
  • the cells will be washed three times for 5 min each with PBS then incubated with goat anti-rabbit antibody diluted 1 :200 in PBS/BSA 0.1% for 30 min at 2!°C.
  • the cells will be washed three times for 5 min with PBS and then incubated with 300 ⁇ . of Vectastain Elite ABC reagent A+B solution (Vector Laboratories cat# P -6S01) for 30 min; the Veciastain Elite ABC reagent A+B solution will be prepared at 21 °C 30 min before incubation, with the cells by adding and mixing successively 2 drops of reagent A to 5 ml of PBS and then 2 drops of reagent B.
  • the cells will be washed 3 times tor 5 min with PBS at 21 °C and the incubated with tetramethylbenzidine (T B) peroxidase substrate solution (Thermo Scientific cai#N301.). After the supernatant turns blue, it will be transferred to a new 96 well EL1SA plate (Greiner bio one cat #65121 ) and 1 M sulfuric acid will be added. The absorbance will be read at 450 am using a Muliiskan Spectrum spectrophotometer (Thermo Scientific). The background signal, read in the wells stained with a rabbit anti- mouse IgG as primary antibody (Abeam cat#ab6709) will be subtracted from all SC 1A and actin readings. Rabbit anti-actin antibody from Abeam (cat# abiSOl) will be used. The SCN1A signal will be normalized to actin signal for each conditio and normalized values for each experimental variant will be compared.
  • T B tetramethylbenzidine
  • SCNIA expression e.g.. mRNA or protein
  • a sample e.g., ceils or tissues m vivo or in vitro
  • SCNI A expression is evaluated b comparison with SCNI A expression in a control sample.
  • expression of the protein or nucleic acid can. be compared using methods known to those of skill in the art with that in a mock-treated or untreated sample.
  • comparison with a sample treated with a control inactive molecule can be made depending on the information desired.
  • a difference in the expression of the SC IA protein or nucleic add in a treated vs. an untreated sample can be compared with the difference in. expression of a different nucleic acid (including any standard deemed appropriate by the researcher, e.g., a housekeeping gene) in a treated sample vs. an untreated sample.
  • the level of SC I A mRNA or protein, in a sample treated wit an antisen.se oligonucleotide of the present invention is increased or decreased by about 1.25-fold to about 30-fold or more relative to an untreated sample or a sample treated with a control nucleic acid.
  • the level of SCN is increased or decreased by about 1.25-fold to about 30-fold or more relative to an untreated sample or a sample treated with a control nucleic acid.
  • J A mRNA or protein is increased or decreased by at least about 1.25-fold, at least about 1.3-fold, at least about 1.4-fold, at least about 1.5-fold, at least about 1.6- fold, at least about 1.7- fold, at least about 1.8-fold, at least about 2-fold, at least about 2.5-fold, at least about 3-fold, at least, about 3.5-fold, at least about 4-fold, at least about 4-5-fold, at least about 5-fold, at least about 5.5-fold, at least about 6-fold, at least about 6.5-fold, at least about.
  • changes in the function of the Navl . i channel can be quantified.
  • changes in the sodium current amplitude induced by SC IA upregulatlon by small compounds can be measured in dissociated hippocampal raterneurons.
  • hippocampal GAD-positive bipolar cells GABAergic intemeurons
  • Dissociated cells will be plated in tissue culture dishes and treated witSi selected small compounds for 24 h after which electrophysiological recordings will be performed, Currents will be recorded using the whole-cell patch-clamp technique with an EPC-9 patch- clamp amplifier (HEKA). Patch pipettes will be made using a model P-97 Flaming-Brown micropipette puller (Sutter instrument). Stimulation and data acquisition will be performed using PULSE program (version 7.5; HEKA. Eiektronik). For voltage clamp experiments the perfusion buffer containing, in.
  • HEKA EPC-9 patch- clamp amplifier
  • mm 1 .1 NaCl, 19.1 tetraetliylammonium chloride, 0.95 BaCfe, 1.90 MgCl 3 ⁇ 4 52.4 CsCI, 0.1 CdCK, 0.95 Cads, 9.52 HEPES, 1 17 glucose, pH 7,35 will be constantly perfused over the cells using peristaltic pump.
  • the patch pipette will contain, in mm: 15? N-niethyl-d-glucaniine, 126 HCL, 0.90 NaCl, 3.60 MgCl 2? 9.01 EGTA, 1.80 ATP-Na 2> 9.01 HEPES, 4.50 creatine-phosphate, pH 7.2.
  • the ceils will be held at -100 mV and depolarizing steps from -60 mV to - 5 mV will be applied in 5 raV increments. Maximal current density will be determined and compared between treated and untreated neurons.
  • Hippocampal GAD-positive bipolar cells GABAergic interneurons
  • GABAergic interneurons GABAergic interneurons
  • Dissociated cells will be plated in tissue culture dishes and treated with selected small compounds for 24 h after which electrophysiological recordings will be performed. Currents will be recorded using the whole-cell patch- clamp technique with an EPC-9 patch-ciamp amplifier (BEKA). Patch pipettes will be made using a mode!
  • the patch pipette will contain, in mm: 157 N- methyM-giucanmie, 126 HC1, 0.90 NaCl, 3.60 MgCI 25 9.01 EGTA, 1.80 ATP-Na 2 , 9.01 HEPES, 4.50 ereatine-phosphate, pH 7.2.
  • the cells will be held at -100 mV and depolarizing steps from -60 mV to - 15 mV will be applied in 5 mV increments.
  • Activation curves (conductance/voltage relationships) will be calculated from current/voltage relationships according to g - W(V - £ N3 ) 5 where represents the peak sodium current measured at potential V, and E3 ⁇ 4, represents the equilibrium potential .
  • the electrode buffer will contain, in ram: 135 potassium gluconate, 20 KG, 2 MgCl-t, 2 ATPNa 2> 0.3 GTP-Na, and 10 HEPES, 0.2 EGTA, pH 7.3.
  • the perfusion buffer will contain, in mm: 340 NaCl, 5 CI, 2 CaC!2, I MgC12, 10 HEPES, and 10 glucose, pH adjusted to 7.4 with aOH,
  • the input-output elationship (number of action polentiais/pA. injected), action potential haif- width, spike amplitude, and spike decrement will be measured and compared between treated and untreated hippocampal inhibitory intemeurons.
  • Single channel current recordings will be performed in an outside/ou patch configuration using the same solutions and protocols as described, above for whole cell patch recordings.
  • SCN1 A up-regulaiion induced by treatment with small compounds may also influence intracellular sodium levels. Such changes may be assessed in the following experiments. Cells will be grown in a 96 well plate and dosed with varying concentrations of small compounds. After 48h. the ceils will be washed with Locke's buffer (8.6 mM HEPES, 5.6 mM KCI 154 mM NaCl, 5.6 mM glucose, 1.0 niM Mgt3 ⁇ 4, 2.3 mM CaClj, 0.000.1 mM glycine, pH 7.4). The fluorescence background will be measured prior to loading the dye inside the cells.
  • Locke's buffer 8.6 mM HEPES, 5.6 mM KCI 154 mM NaCl, 5.6 mM glucose, 1.0 niM Mgt3 ⁇ 4, 2.3 mM CaClj, 0.000.1 mM glycine, pH 7.4
  • the dye will be loaded inside the ceils by incubating the cells with the dye for l b at 3fC with 10 ⁇ SBH-AM (dye binding to a*), 0.04% Pluronic F-127 Molecular Probes, OR, USA) and 2.5 mM probenecid in Locke's buffer (50 ⁇ /weii). At this time, cells will be washed twice with 2.5 mM probenecid in Locke's buffer (150 ⁇ /wefl).
  • Plates containing the loaded cells will be placed inside a reader such as a FLEXstation ⁇ II (Molecular Devices, Sunnyvale, CA, USA), The cells loaded with the dye will be excited at 340 nni and 380 nm; the emission signal will be recorded at 505 nm. The signal base line will be measured at this time. After measuring the signal base line, monensin (HMD, Gibbstown, NJ, USA, cat# 475895) or gramicidin (HMD, Gibbstown, NJ, USA, cat# 368020-25MG will be added to individual wells with cells as positive controls.
  • monensin HMD, Gibbstown, NJ, USA, cat# 475895
  • gramicidin HMD, Gibbstown, NJ, USA, cat# 368020-25MG
  • TTX (1 uM) treatment will be used as negative control Then rela tive expression of active SCNJ A at the plasma membrane in the cells pre-treated with active compounds compared to vehicle control will be established.
  • the signals will be calculated as a ratio of the emission at 505 nm to 340 nm 380nra using Excel software.
  • the dye will be loaded by incubating the cells with the dye for Ih at 37"C with 10 ⁇ SBF1-AM (dye binding to Na + ), 0.04% pluronic acid F-l 27 and 2,5 mM probenecid in Locke's buffer (50 ⁇ /well). At this time, cells will be washed twice with 2.5 mM probenecid in Locke's buffer (150 ⁇ well).
  • the cells in the 96 well plate or on a coverslide will be placed under a epi-fmorescent microscope equipped with Hg lamp and appropriate filters for excitation and emission (from Omega Optical Inc . , Bratt!eboro, VT.
  • animal models of a particular disease state may be utilized. In each case, the animal will be selected based upon the particular target disease or condition.
  • the animals are known to express or are able to express the SC l A polypeptide or variant thereof
  • the compounds of the present invention can be utilized for diagnostics, therapeutics, and prophylaxis, and as research reagents and components of kits.
  • compounds, which are able to modulate gene expression are often used by those of ordinary skill to elucidate the function of particular genes or to distinguish between functions of various members of a biological pathway. Use of the compounds in the manufacture of a medicament to treat any of the diseases recited herein is a feature of the claimed invention.
  • the compounds of die present invention are useful as tools in differential and/or combinatorial analyses to elucidate interdependent expression patterns of a portion or the entire complement of genes expressed within cells and tissues.
  • biological system or “system” is defined as any organism, ceil, cell culture or tissue that expresses, or is made competent to express products of the sodium channel, voltage- gated, alpha sub-unit (SC xA) family of genes. These include, but are not limited to, humans, transgenic animals., cells, cell cultures, tissues, xenografts, transplants and combinations thereof.
  • expression patterns within cells or tissues treated with one or more compounds are compared to control cells or tissues not treated with such compounds and the patterns produced are analyzed for differential levels of gene expression as they pertain, for example, to disease association, signaling pathway, cellular localization, expression level, size, structure or function of the genes examined. These analyses can be performed on stimulated or unstimulated cells and in the presence or absence of other compounds that affect expression patterns.
  • Examples of methods of gene expression analysis known in the art include DNA arrays or microarrays, SAGE (serial analysis of gene expression), READS (restriction enzyme amplification of digested cDNAs), TOGA (total gene expression analysis), protein arrays and proteomics, expressed sequence tag (EST) sequencing, subtractive RNA fingerprinting (Su F), sobtractive cloning, differential, display (DD), comparative genomic hybridization, FISH (fluorescent in situ hybridization) techniques and mass spectrometry methods.
  • an animal preferably a human, suspected of having a disease or disorder which can be treated by modulating the expression of sodium channel, voltage-gated, type I, alpha subunit (SCN.1 A) polynucleotides or proteins is treated by administering the compounds in accordance with this invention.
  • the methods comprise the step of administering to the animal in need of treatment, a therapeutically effective amount of sodium channel, voltage-gated, type f, alpha subunit (SCNIA) modulator.
  • the sodium channel voltage-gated, type I, alpha subunit (SCNIA) modulators of the present invention effectively modulate the activity of the sodium channel, voltage-gated, type 1, alpha subunit (SCNI A) or modulate the expression of the sodium channel, voltage-gated, type I, alpha subunit (SCNI A) protein.
  • the activity or expression of sodium channel, voltage- gated, type I, alpha subunit (SCNI A) in an animal is inhibited by about 10% as compared to a control.
  • the activity or expression of SCNIA in an animal is inhibited by about 30%.
  • the activity or expression of Sodium channel, voltage-gated, type I, alpha subunit (SC IA) in an animal is inhibited by 50% or more.
  • the small compounds modulate expression of sodium channel, voltage- gated, type L alpha subunit (SC 1 A) tn NA or protein by at least 10%, by at least 50%, by at least 25%, by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 75%, by at least 80%, by at least 85%, by at least 90%, by at least 95%, by at least 98%, by at least 99%, or by 100% as compared to a control.
  • SC 1 A type L alpha subunit
  • the activity or expression of Sodium channel, voltage-gated, type I, alpha subunit (SCN1 A) and/or in an animal is increased by about 10% as compared to a control.
  • the activity or expression of Sodium channel, voltage-gated, type 1, alpha subunit (SCNI A) in. an animal is increased by about 30%.
  • the activity or expression of Sodium channel, voltage-gated, type I, alpha subunit (SC IA) in an animal is increased by 50% or more.
  • the compounds modulate expression of Sodium channel, voltage-gated, type I, alpha subunit (SCNI A) m NA by at least 10%, by at least 50%, by at least 25%, by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 75%, by at least 80%, by at least 85%, by at least 90%, by at least 95%, by at least 98%, by at least 99%, or by 1 0% or more as compared to a control.
  • SCNI A alpha subunit
  • the reduction or increase in/ of the expression of sodium channel, voltage-gated, type I, alpha subunit (SCNI A) may be measured in blood, adipose tissue, liver or any other body fluid, tissue or organ of the animal
  • the cells contained within said fluids, tissues or organs being analyzed contain a nucleic acid molecule encoding sodium channel, voltage-gated, type I, alpha subunit (SCNI A) peptides and/or the sodium channel, voltage-gated, type I, alpha subunit (SCN I A) protein itself.
  • Hie compounds of the invention can be utilized in pharmaceutical compositions by adding an effective amount of a compound to a suitable pharmaceutically acceptable diluent or carrier. Use of the compounds and methods of the invention may also be useful prophylactica!iy.
  • the compounds of the invention may also be admixed, encapsulated, conjugated or otherwise associated with other molecules, molecule structures or mixtures of compounds, as for example, liposomes, receptor-targeted molecules, oral, rectal, topical or other formulations, for assisting in uptake, distribution and'or absorption.
  • Representative United States patents that teach die preparation of such uptake, distribution and/or absorption-assisting formulations include, but are not limited to, U.S. Pat. Nos.
  • invention practice involves administering at least one of the foregoing compounds to a patient in need of treatment thereof: milnadpran, torsemk!e, risperidone, pmaddil, benidipme, ketoeonazole, ehselen. tadalatll, zeranol, nefazadone, lomerizine.
  • icariin omeprazole, esoraeprazole, L-694,247, nitrendipine, nimetazepam, am!exanox, mosapride, sertraline or stanozoloi or pharrnaceuticalty acceptable salts, isomers, enantiomers, isofor s, polymorphs, hydrates, solvates or prodrugs thereof.
  • the compounds of the invention encompass any phannaceuticaliy acceptabie salts, esters, or salts of such esters, or any other compound which, upon administration to an animal, including a human., is capable of providing (directly or indirectly) the biologically active metabol ite or residue thereof '
  • ''phannaceuticaliy acceptabie salts refers to physiologically and phannaceuticaliy acceptable salts of the compounds of the invention: i.e., salts that retain the desired biological activity of the parent compound and do not impart undesired toxicological effects thereto.
  • the present invention also includes pharmaceutical compositions and formulations that include the compounds of the invention.
  • the phammceuiieal compositions of the present invention may be administered in a number of ways depending upon whether l ocal or systemic treatment is desired and upon the area to be treated.
  • Adinmisiratio may be topical (including ophthalmic and to mucous membranes including vaginal and rectal delivery), pulmonary, e.g., by inhalation or insufflation of powders or aerosols, including by nebulizer; intratracheal, intranasal, epidermal and transdermal), oral or parenteral.
  • Parenteral administration includes intravenous, intraarterial, subcutaneous, intraperitoneal or intramuscular injection or infusion; or intracranial, e.g., intrathecal or Intraventricular, administration.
  • administration can be made by, e.g., injection or infusion into the cerebrospinal fluid.
  • adm inistration can be with one or more agents capable of promoting penetration of the subject compound across the blood-brain barrier. Administration can be rapid as by injection or made over a period of time as by low infusion or administration of slow release formulations.
  • the subject compounds can also be linked or conjugated, or combined with agents that provide desirable pharmaceutical or pharmacodynamic properties.
  • the compounds can be coupled to any substance, known in the art to promote penetration or transport across the blood-brain barrier, such as an antibody to the transferrin receptor, and administered by intravenous injection.
  • Osmotic blood brain barrier disruption can also be accomplished by, e.g., infusion of sugars including, but not limited to, meso eiythritol, xylite!
  • the subject compounds may be admixed, encapsulated, conjugated or otherwise associated with other molecules, molecule structures or mixtures of compounds, for example, liposomes, receptor-targeted molecules, oral, rectal, topical or other formulations, for assisting in uptake, distribution and/or absorption.
  • cationic lipids may be included in the formulation to facilitate compound uptake.
  • LIPOFECTI available from GIBCO-B L, Bethesda, MD.
  • compositions and formulations for topical administration may include transdermal patches, ointments, lotions, creams, gels, drops, suppositories, sprays, liquids and powders.
  • Conventional pharmaceutical carriers, aqueous, powder or oily bases, thickeners and the like may be necessary or desirable.
  • Coated condoms, gloves and the like may also be useful.
  • the pharmaceutical formulations of the present invention may be prepared according to con ventional techniques well known in die pharmaceutical industry. Such techniques include the step of bringing into association the active ingredients with the pharmaceutical carrier(s) or excipient(s). In general, the formulations are prepared by unitbrmly and intimately bringing into association the active ingredients with liquid carriers or finely divided solid carriers or both, and then, if necessary, shaping the product.
  • compositions of the present invention may be formulated into any of many possible dosage forms such as. but not limited to, tablets, capsules, gel capsules, liquid syrups, soft gels, suppositories, and enemas.
  • the compositions of the present invention may also be formulated as suspensions in aqueous, nonaqueous or mixed media.
  • Aqueous suspensions ma further contain substances that increase the viscosity of the suspension including, tor example, sodium carboxymethylcellulose, sorbitol and/or dextran.
  • the suspension may also contain stabilizers.
  • compositions of the present invention include, but ate not limited to, solutions, emulsions, foams and !iposorae-contaming formulations.
  • the pharmaceutical compositions and formulations include, but ate not limited to, solutions, emulsions, foams and !iposorae-contaming formulations.
  • ?7 of the present in vention may comprise one or more penetration enhancers, carriers, excipienis or other active or inactive ingredients.
  • Emulsions axe typically heterogeneous systems of one liquid dispersed in another in the form of droplets usually exceeding 0.1 ⁇ in diameter. Emulsions may contain additional components in addition to the dispersed phases, and the active drug that may be present as a solution in either the aqueous phase, oily phase or itself as a separate phase. Microemulsions are included as an embodiment of the present invention. Emulsions and their uses are well known in the art and are further described in U.S. Pat. No. 6,287,860.
  • Formulations of the present invention include liposomal formulations.
  • liposome means a vesicle composed of amphophilic lipids arranged in a spherical bi layer or hilayers. Liposomes are unilamellar or multilamellar vesicles which have a membrane formed from lipophilic material and an aqueous interior that contains the composition to be delivered,
  • Liposomes also include "sterically stabilized" liposomes, a term which, as used herein, refers to liposomes comprising one or more specialized lipids. When incorporated into liposomes, these specialized lipids result in liposomes with enhanced circulation lifetimes relative to liposome slacking such specialized lipids.
  • sterically stabilized liposomes are those in which part of the vesicle-forming lipid portion of the l iposome comprises one or more glycoiipids or is derivatized. with one or more hydrophi!ic polymers, such as a polyethylene glycol (PEG) moiety.
  • PEG polyethylene glycol
  • compositions of the present invention may also include surfactants.
  • surfactants used in drag products, formulations and. in emulsions is well known in. the art. Surfactants and their uses are former described in U.S. Pat. No. 6,287,860, which is incorporated herein by reference.
  • the present invention employs various penetration enhancers to effect, the efficient delivery of the small molecules.
  • penetration enhancers also enhance the peraieability of lipophilic drags.
  • Penetration enhancers may be classified as belonging to one of five broad categories, i.e., surfactants, fatty acids, bile salts, chelating agents, and non-chelating nonsurfactants. Penetration enhancers and their uses are further described in U.S. Pat. No. 6,287,860, which is incorporated herein by reference.
  • formulations are routinely designed according to their .intended use, i.e. route of administration.
  • Preferred formulations for topical administration include those in which the compounds of the invention for the uses recited herein are in admixture with a topical delivery agent such as lipids, liposomes, fatty acids, fatty acid esters, steroids, chelating agents and surfactants.
  • a topical delivery agent such as lipids, liposomes, fatty acids, fatty acid esters, steroids, chelating agents and surfactants.
  • Preferred lipids and liposomes include neutral (e.g. dioleoyl-phosphatidyl DOPE ethanolamine, dimyristoylphosphatidyl choline DMPC, distea.ro lyphosphatid I choline) negative (e.g. dimyristoylphosphatidyl glycerol DMPG) and cationic (e.g. d ⁇ oleoyite3 ⁇ 43 ⁇ 4methylaninopropyl DOTAP and dioleoyl-phosphatidyl ethanolamine
  • the compounds of the in vention may be encapsulated within liposomes or may form complexes thereto, in particular to cationic liposomes.
  • compounds may be complexed to lipids, in particular to cationic lipids.
  • Preferred fatty acids and esters, pharmaceutically acceptable salts thereof, and their uses are further described in U.S. Pat. No. 6,287,860.
  • compositions and formulations for oral administration include powders or granules, mtcroparticutates, nanoparticulates, suspensions or solutions " water or non-aqueous media, capsules, gel capsules, sachets, tablets or rninitabiets. Thickeners, flavoring agents, diluents, emulsifiers, dispersing aids or binders may be desirable.
  • Prefeixed oral formulations are those in which compounds of the invention are administered in conjunction with one or more penetration enhancers surfactants and chelators.
  • Preferred surfactants include fatty acids and/or esters or salts thereof bile acids and/or salts thereof Preferred bile acids/salts and fatty acids and their uses are further described in U.S. Pat. No. 6,287,860, which is incorporated herein by reference. Also preferred are combinations of penetration enhancers, fo example, fatty acids/salts in combination with bile acids salts. A particularly preferred combination is the sodium salt of !auric acid, capric acid and UDCA, Further penetration enhancers include polyoxyethylene ⁇ 9 ⁇ lauryl ether, poiyoxyethylene-20-cetyI ether. Compounds of the invention may be delivered orally, in granular form including sprayed dried panicles, or complexed to form micro or nanoparticles.
  • compositions and formulations for parenteral, intrathecal or intraventricular administration may include sterile aqueous solutions that may also contain buffers, diluents and other suitable additives such as, but not limited to, penetration enhancers, carrier compounds and other pharmaceutically acceptable carriers or excipients.
  • Certain embodiments of the invention provide pharmaceutical, compositions containing one or more compounds and one or more other active pharmaceutical ingredients.
  • active pharmaceutical ingredients include but are not limited to any active ingredient that is useful to treat a condition of the patient in need of treatment with a compound of the invention.
  • T wo or more combined compounds may be used together or sequentially.
  • compositions of the invention may contain one or more compounds, targeted to a first nucleic acid target and. one or more additional compounds targeted to a second nucleic acid target.
  • the first target may be a particular antiseme sequence of sodium channel, voltage-gated, type I, alpha suhunit (SCN.1 A)
  • the second target ma be a region from anodier nucleotide sequence.
  • compositions of the invention may contain two or more compounds that modulate different regions of the same sodium channel, voltage-gated, type I, alpha snbnnit (SCN.1 A) nucleic acid or protein target. Two or more combined compounds may be used together or sequentially.
  • compositions and their subsequent administration are believed to be within the skill of those i the art. Dosing is dependent on severity and responsiveness of the disease state to be treated, with, the course of treatment lasting from several days to several months, or until a cure is effected or a diminution of the disease state is achieved. Optimal dosing schedules can be calculated from measurements of drug accumulation in the body of the patient. Persons of ordinary skill can easily determine optimum dosages, dosing methodologies and repetition rates. Optimum dosages may vary depending on the relative potency of individual active pharmaceutical ingredients, and can generally be estimated based on EC50s found to be effective in in vitro and in vivo animal models and can.
  • dosage is from 0.01 to .100 mg per kg of body weight, and may be given once or more daily, weekly or monthly. Persons of ordinary skill in the art can easily estimate repetition rates for dosing based on measured residence times and concentrations of the drug in bodily fluids or tissues.
  • a patient is treated with a dosage of drug that is at least about 1 , at least about 2, at least about 3, at least about 4, at least about 5, at least about 6, at least about 7, at least about 8, at least about 9, at least about 10, at least about 15, at least about 20, at least about 25, at least about 30, at least about 35, at least about 40, at least about 45, at least about 50, at least about 60, at least about 70, at least about 80, at least about 90, or at least about 100 rng/kg body weight.
  • Pinacidil N-cyano-N 'pyridin-4-yl-N' '- ⁇ 1 ,2,2-rrimethyipropyl)guanidine
  • Example 1 In Example 1 primar human skin fibroblasts carrying Dravet-associated SCNI A. mutation were treated with small compounds at a final concentration of 1 uM. The data below shows that after 24- 48 h treatment these compounds were able to upregulate SC I A mRNA,
  • PGR cycle 50°C for 2 rain, 95°C for 10 rain, 40 cycles of (95"C for 1.5 seconds, 60"C for 1 nriri) using StepOne Pius Real Time PGR. system (Applied Biosysteras).
  • the assay for I8S was manufactured by ABI (cat# 4319413E). Fold change in gene expression after treatment with compounds was calculated based on the difference in 18S-normalized dCt values between compound- and vehicle-treated samples.
  • Example 2 primary human keratinocytes were treated with small compounds at a final concentration of 1 uM. The data below shows that after 24-48 h treatment these compounds were able to upregulate SCN IA mRNA.
  • DMSO fetal sulfate
  • the following PGR cycle was used: 50°C for 2 min, 95°C for 10 min, 40 cycles of (95°C for 15 seconds, 60°C for 1 min) using StepOne Phis Real Time PCR system (Applied Biosystems).
  • the assay for I SS was manufactured by ABI (cat# 4 19413E), Fold change in gene expression after treatment with compounds was calculated based on the difference in 1 SS-norma!ized dCt values between compound- and vehicle-treated samples.
  • Table I shows fold increase in SCN l A mRNA levels in primary skin fibroblasts carrying a Dravet-associated mutation (Column 1) and adult primary keratinocytes (Column 2) after treatment with small compounds at a concentraton of 1 tiM Avg ⁇ average upregulation; STE - standard error of the mean.
  • SCN 1 A protein will be detected instde celis by iramunohistochemistry. To achieve this, the cells will be grown in 24-welf plates using appropriate growth conditions. Forty eight hours after addition of small compounds, the media will be removed and the cells will be washed 3 times with Dulbecco's phosphate-buffered saline without calcium and magnesium (PBS) (Mediatech cat# 21 -031 -CV). ' Then PBS will be discarded and the cells will be fixed in the 24 well plate using 300 ⁇ of 1 0% methanol for 15 rain at ⁇ 20°C.
  • PBS Dulbecco's phosphate-buffered saline without calcium and magnesium
  • the cells After removing the methanol and washing with PBS, the cells will be incubated with 3% hydrogen peroxide (Fisher Chemical cat H325 ⁇ 1.O0) for 5 min at 2 PC. The ceils will be washed three times for 5 mm with PBS, then incubated with 300 ⁇ of bovine serum albumin (BSA) (Sigma cat A- 647) at 0.1% in PBS for 30 min at 2.PC. The cells will be washed three times for 5 min wit PBS then incubated with 300 ⁇ of avklin solution (Vector Laboratories cat# SP-2001) for 30 min at 2 C.
  • BSA bovine serum albumin
  • the cells will be briefly rinsed three times with PBS then, incubated wit biotin solutio (Vector Laboratories cat# SP-2001) for 30 min at 2 C.
  • the cells will be washed three times with PBS and then incubated overnight at 4°C with 300 ⁇ per well of rabbit, antibody raised against synthetic peptide (EEQ YYNA LGS KP) corresponding to C terminal amino acids 1491 -1508 of rat Scnla (Abeam cai# ab24820; known to recognize rat Scnla, human SCNIA and mouse Scnla) diluted at 1 :250 in PBS/BSA 0.1%.
  • the cells After equilibrating the plate for 5 min at 2 C, the cells will be washed three times 5 min each with PBS then incubated with goat anti-rabbit antibody diluted 1 :200 in PBS/BSA 0.1 % for 30 min at 2 PC. The cells will be washed three times for 5 min with PBS and then incubated with 300 ⁇ of Vectastain Elite ABC reagent A ⁇ B solution (Vector Laboratories cat# PK-6101 ) for 30 rain; the Vectastain Elite ABC reagent A+B solution will be prepared at 2 PC 30 min before incubation with the cells b adding and mixing successively 2 drops of reagent A to 5 ml of PBS and then 2 drops of reagent B.
  • Vectastain Elite ABC reagent A ⁇ B solution Vector Laboratories cat# PK-6101
  • the cells will be washed 3 times for 5 min each with PBS at 2 PC and then incubated with Diarainobenzidine (DAB) peroxidase substrate solution (Vector Laboratories cat# SK.-4105) until cells are stained; the DAB peroxidase substrate solution will be reconstituted before being added to the cells by mixing ! ml of lmmPACTTMDAB Diluent with 30 ⁇ of imniPACTTM DAB Chroniogen concentrate. At this time, the cells will be briefly washed three times with PBS and 300 ⁇ of PBS will be left in each well.
  • DAB Diarainobenzidine
  • the staining of the cells will be analyzed directly inside the wells of the 24-weli plate using an inverted Nikon Eclipse TS100 microscope equipped with a Nikon DS-Ril camera coupled with Nikon Digital-Sight equipment on the screen of a Deil Latitude D630 laptop. Photos of individual wells will be made using the software provided with the Nikon camera, the NlS-Elements D 3.0, .
  • Example 4 Quantification of the SCNIA protein by enzyme-linked immunosorbent assay (ELISA) [00159] The purpose of this experiment is to rank compounds according to their ability to upregu!ate the SC IA protein expression in different cells using a technique called enzyme-linked immunosorbent assay (ELISA).
  • ELISA enzyme-linked immunosorbent assay
  • Amounts of SCNIA protein produced by the cells will be quantified by ELISA. To achieve this, the cells will be grown in 24-well plates using appropriate growth conditions. Forty eight hours after addition of small compounds, the media will be removed and the cells will be washed 3 times with Dulbecco's phosphate-bufiered saline without calcium aid magnesium (PBS) (Mediateeh cat# 21-031-CV). Then PBS will be discarded and the cells will be fixed in the 24 well plate using 100 ⁇ of 100% methanol for 15 min at -20°C.
  • PBS Dulbecco's phosphate-bufiered saline without calcium aid magnesium
  • the cells After removing the methanol and washing with PBS, the cells will be incubated with 3% hydrogen -peroxide (Fisher Chemical eat#H325-100) for 5 mm at 21 °C. The cells will be washed three times for 5 min with PBS, then incubated with 00 ⁇ of bovine serum albumin (BSA) (Sigma cat# A-9647) at 0.1% in PBS for 30 min at 21°C. The cells will be washed three times for 5 min with PBS then incubated with 300 ⁇ of avidirx solution (Vector Laboratories cat# SP-2001) for 30 min at 21*C.
  • BSA bovine serum albumin
  • the ceil will be briefly rinsed three times with PBS then incubated with btotin solution (Vector Laboratories cat# SP-2001) for 30 min at 2 PC.
  • the cells will be washed three times with PBS and then incubated overnight at 4°C with 100 ⁇ ! per well of rabbit antibody raised against a synthetic peptide (EEQK YYNAM KLGSK P) corresponding to C terminal amin acids 1491-1508 of rat Sen l a (Abeam eat# ab24820; known to recognize at least rat Sen la, human SCNIA and also mouse Sen la) diluted at 1 :250 in PBS/BSA 0.1%.
  • a synthetic peptide EQK YYNAM KLGSK P
  • the cells After equilibrating the plate for 5 min at 21°C, the cells will be washed three times for 5 min each with PBS then incubated with goat anti-rabbit antibody diluted 1 :200 in PBS BSA 0.1 % for 30 ram at 21°C. The cells will be washed three times for 5 min with PBS and then incubated with 300 ⁇ of Vectastain Elite ABC reagent A + B solution (Vector Laboratories cat# PK.-6101) for 30 min; the Vectastain Elite ABC" reagent A ⁇ B solution will be prepared at 2 PC 30 min before incubation with the ceils by adding and mixing successively 2 drops of reagent A. to 5 ml of PBS and then 2 drops of reagent B.
  • Vectastain Elite ABC reagent A + B solution Vector Laboratories cat# PK.-6101
  • the Vectastain Elite ABC" reagent A ⁇ B solution will be prepared at 2 PC 30 min before incubation with the ceils
  • the cells will be washed 3 times for 5 min with PBS at 21 °C and then incubated with tetramemylbenzidine (TMB) peroxidase substrate solution (Thermo Scientific cat N301). After the supernatant turns blue, it will be transferred to a new 96 welt ELISA plate (Greiner bio one cat #65121 ⁇ and 1 M sulfuric acid will be added. The absorbance will be read at 450 nm using a MuJtiskan Spectrum spectrophotometer (Thermo Scientific). The background signal, read in the wells stained with a rabbit and- mouse IgG as primary antibod (Abeam cat#ab6709) will be subtracted from all SCNI A and actin readings. Rabbit anti-actiii antibody from Abeam (cat# abl.80! will be used. The SCNI signal will be normalized to actin signal for each condition and normalized values for each experimental variant will be compared.
  • TMB tetramemylbenzidine
  • RNA will be harvested from cells grown in the appropriate culture conditions. To achieve this, 48 h after addition of small compounds the media will be removed and RNA will be extracted from the cells using SV Total RNA. Isolation System from Promega (cat Z3I05) or RNeasy Total RNA isolation kit from Qiagen (cat 74181 ) following the manufacturers' instructions.
  • RNA Six hundred nanograms of RNA will be added to the reverse tra section reaction performed using Verso cD A kit from Thermo Scientific (cat#AB1453B) or High Capacity- cDNA Reverse Transcription Kit (cat# 4368813) or Superscript V LO cDNA Synthesis Kit from Envitrogen (cat#! .1754-250) as described in the manufacturer's protocol.
  • the cDNA from this reverse transcription reaction will be used to monitor gene expression by real time PCR using ABl Taqman Gene Expression Mix (Applied Biosystems Inc., Foster City CA, cat#4369510) and specific primers/probe for actio designed by ABl (Applied Biosystems Taqman Gene Expression Assay for human actin cat# Hs99999903 jm 1 *, monkey actin cat# Rh03043379 gll or mouse actin eat# Mm00607939_s1 *).
  • the following PCR cycle will, be used: 50°C for 2 min, 95°C for 10 min, 40 cycles of ( 5°C for 15 seconds, 60°C for 1 mm) using StepOne Plus Real Time PCR Machine (Applied Biosystems inc., Foster City CA). Fold change in gene expression after treatment with aniisense oligonucleotides will be calculated based on the difference in ISS-normalized dCt values between treated and mock-transfceted samples.
  • Actin protein will be detected inside cells by immi ohistochemistry. To achieve this, 48 h after addition of small compounds, the media will be removed and the cells will be washed 3 times with Dulbecco's phosphate-buffered saline without calcium and magnesium (PBS) (Mediatech cat# 21-031-
  • the cells After equilibrating the plate for 5 min at 21°C 5 the cells will be washed three times 5 min each with PBS then incubated with goat anti-rabbit antibody diluted 1:200 in PBS/BS 0.1 % for 30 min at 21 °C.
  • the cells will be washed three times for 5 min with PBS and then incubated with 300 ⁇ of Vectastam Elsie ABC reagent A+B solution (Vector Laboratories cat# PK-61 1 ) for 30 min; the Vectastam Elite ABC reagent A+B solution will be prepared at 2F J C 30 mm before incubation wi th the cells by adding and mixing successi vel 2 drops of reagent A to 5 ml of PBS and then 2 drops of reagent B.
  • Vectastam Elsie ABC reagent A+B solution Vector Laboratories cat# PK-61 1
  • the cells will be washed 3 times for 5 min with PBS at 2 i°C and then incubated with Dia inobenzidine (DAB) peroxidase substrate solution (Vector Laboratories cat SK-4105) until cells are stained; the DAB peroxidase substrate solution will be reconstituted before being added to the cells by mixing 1 ml of lmmPACT TM DAB Diluent with 30 ⁇ of ItnmPACTTM DAB Chromogen concentrate. At this time, the cells will be briefly washed three times with PBS and 300 ⁇ of PBS will be left in each well.
  • DAB Dia inobenzidine
  • the staining of the cells will be analyzed directly inside the wells of the 24-weil plate using an inverted Nikon Eclipse TSlOO microscope equipped with a Nikon DS-Ril camera coupled with Nikon Digital-Sight equipment on the screen of a Dell Latitude D630 laptop. Photos of individual wells will be made using the software provided witli the Nikon camera, the NI ' S-Elements D 3.0.
  • Example 7 Changes in the sodium current amplitude induced by SCN1A upregulnti n in hippocampal pyramidal cells
  • Hippocampal GAD-positive bipolar cells will be dissociated from ⁇ - to 16-d ⁇ ol rats by digestion with pronase and then thermolysm in a buffer continuously oxygenated with 95% O? and 5% CO?. Dissociated cells will be plated in tissue culture dishes and treated with selected small compounds for 24 h after which electrophysiological recordings will be performed. Currents will be recorded using the whole-cell patch-clamp technique with an EPC-9 patch-clamp amplifier (HEKA). Patch pipettes will be made using a model P-97 Flaming-Brown micropipette puller (Sutter instrument). Stimulation and data acquisition will be performed using PULSE program (version 7.5; HEKA ESektromk),
  • the perfusion buffer containing, in mm: 19, 1 NaCi, 19.1 tetraethylammonium chloride, 0.95 BaCL, 1.90 MgCL, 52.4 CsC!, 0.1 Cd(3 ⁇ 4, 0.95 Ca(3 ⁇ 4, 9.52 HEPES, 1 1.7 glucose, pH 7.35 will be constantly perfused over the cells using peristaltic pump.
  • the patch pipette will contain, in mm: 157 N-oiethyi ⁇ d ⁇ glucaraiue 5 126 BCt 0.90 NaCL 3.60 MgCfe, 9.01 EGTA, J.80 ATP-Na?, 9.01 HEPES, 4.50 creatine-phosphate, pH 7.2,
  • the cells will be held at - 100 mV and depolarizing steps from -60 mV to -15 mV will be applied in 5 mV increments. Maximal current density will be determined and compared between treated and untreated neurons.
  • Example S Changes in the sodium current characteristics induced by SCNIA upreg lation in hippocampal pyramidal cells
  • Hippocampal GAD-positive bipolar cells will be dissociated from 1 1 - to 16-d-old rats by digestion with promise and then thermoiysin in a buffer continuously oxygenated with 95% C and 5% CO 2 .
  • Dissociated cells will be plated in tissue culture dishes and treated with selected small compounds for 24 h after which electrophysiological recordings will be performed. Currents will be recorded using the whole-cell patch-clamp technique with an EPC-9 patch-clamp amplifier (HEKA). Patch pipettes will be made using a model P-97 Flaming-Brown micropipette puller (Sutter Instrument).
  • the patch pipette will contain, in mm: .157 N-methyl-d-glucamine, 126 HCL 0.90 NaCI, 3.60 MgC3 ⁇ 4 9.01 EGTA, 1.80 ATP-Na 2 , 9.01 HEPES, 4.50 creatine-phosphate, pH 7.2, The ceils will be held at -100 mV and depolarizing steps from -60 mV to -1.5 mV will be applied in 5 mV increments.
  • Activation curves (conductance/voltage relationships) will be calculated from current/voltage relationships according to g ⁇ W(V ⁇ ⁇ »), where 1 ⁇ 2 3 represents the peak sodium current measured at potential V, and E ., represents the equilibrium potential Bohzmann function will be fitted to normalized activation and inactivation curves and the curve characteristics will be determined, inactivation time constants will be evaluated by fitting the current decay with single exponential function. Activation and inactivation profiles will be compared between treated and untreated cells to determine if treatment changed current characteristics.
  • the electrode buffer will contain, in mm: 135 potass um gluconate, 20 KCL 2 MgCfe, 2 ATPNa 2 , 0.3 GTP-Na, and 10 HEPES, 0.2 EGTA, pH 7.3.
  • the perfusion buffer will contain, in mm: 1 0 NaCl. 5 CI, 2 CaC12, 1 MgC12, 10 HEPES, and 10 glucose, pi t adjusted to 7,4 with NaOH.
  • the input -output relationship (number of action potentials/pA injected), action potential half-width, spike amplitude, and spike decrement will be measured and compared between treated and untreated hippocampal. inhibitory mterneurons.
  • the purpose of this experiment is to check if the up-regulation of SCN I A protein in cells leads to changes in the intracellular levels of sodium.
  • Cells expressing different amounts of SCNI A after dosing with small compounds will be loaded with a dye specific for Na+.
  • monensin and gramicidin which are Na+ ionophores, will be used.
  • the ceils will be washed with Locke's buffer (8.6 mM HEPES, 5,6 m KG, 154 mM NaCl, 5.6 mM glucose, 1.0 mM gC1 ⁇ 2, 2.3 mM CaCl 2 , 0.0001 mM glycine, pH 7.4).
  • the fluorescence background will be measured prior to loading the dye inside the- cells.
  • the dye will be loaded inside the cells by incubating the cells with the dye for l h at 37°C with 10 ⁇ SBFI-AM (dye binding toNa ), 0,04% Plutonic F-127 Molecular Probes, OR, USA) and 2,5 mM probenecid in Locke's buffer (50 ⁇ well). At this time, cells will be washed twice with 2.5 mM probenecid in Locke's buffer (150 ⁇ /well).
  • Plates containing the loaded cells will be placed inside a reader such as a FLEXstationTM II (Molecular Devices, Sunnyvale, CA, USA).
  • the cells loaded with the dye will be excited at 340 nra and 380 ras; the emission signal will be recorded at 505 nm.
  • the signal base line will be measured at this time.
  • monensin EMD, Gibbstown, NI, USA, cat# 475895
  • gramicidin EMD, Gibbstown, NJ, USA, cat# 368020-25 MG will be added to individual wells with cells as positive controls, TTX (I lilvf) treatment will be used as negative control.
  • Example 10 Effect (if SCNIA up-regulation on sodium levels in a single cell
  • monensin. EMD, Gibbstown, NJ, USA, cat# 475895
  • gramicidin EMD, Gibbstown, NJ, USA, cat# 368020-25MG

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CN103874486A (zh) 2014-06-18
JP2014525446A (ja) 2014-09-29
US20140309181A1 (en) 2014-10-16
EP2753317B1 (en) 2020-02-26
EA029151B1 (ru) 2018-02-28
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TW201317360A (zh) 2013-05-01
CA2847811A1 (en) 2013-03-14
BR112014005234A2 (pt) 2017-04-11
TWI666325B (zh) 2019-07-21
EP2753317A4 (en) 2015-04-08
EA201490420A1 (ru) 2014-12-30
CA2847811C (en) 2019-10-22
EP2753317A1 (en) 2014-07-16
CL2014000550A1 (es) 2014-09-22
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CN108272782B (zh) 2021-04-23
US10583128B2 (en) 2020-03-10

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